Radiomaster Zorro ELRS Radio Transmitter with RP1 ExpressLRS 2.4ghz Nano Receiver

The Radiomaster Zorro ELRS is a professional-grade 2.4GHz radio transmitter system designed for FPV drone racing, long-range RC aircraft, and autonomous aerial vehicles requiring ultra-low latency control. Professional FPV pilots, drone racing enthusiasts, and RC hobbyists use this system for its exceptional range, reliability, and sub-millisecond response time in competitive and recreational flying scenarios. This transmitter solves the critical problem of signal dropout, high latency, and interference experienced with legacy RC systems by implementing ExpressLRS open-source protocol with advanced frequency hopping and redundancy features.

Product Overview

The Radiomaster Zorro ELRS transmitter operates on the 2.4GHz ISM band using the ExpressLRS (ELRS) protocol, which delivers industry-leading 50Hz, 150Hz, and 250Hz refresh rates with latency as low as 7ms. The system employs advanced FHSS (Frequency Hopping Spread Spectrum) technology that automatically switches between 16 available channels to avoid interference from WiFi, Bluetooth, and other 2.4GHz devices. The RP1 nano receiver is an ultra-compact module measuring just 16x16mm, making it ideal for weight-critical applications like micro FPV drones, racing quads, and lightweight RC aircraft where every gram matters. The transmitter features a robust aluminum construction with an integrated antenna, 16-channel control capability, and full telemetry feedback including RSSI, battery voltage, and signal quality metrics.

What distinguishes the Zorro ELRS from competing systems is its open-source firmware architecture, allowing users to customize performance parameters, update protocols wirelessly, and access a thriving community of developers and pilots. The RP1 receiver includes built-in failsafe programming, configurable output protocols (PWM, SBUS, DMA), and automatic frequency binding without requiring external tools. The system achieves exceptional range performance of 40+ kilometers in line-of-sight conditions while maintaining rock-solid signal integrity even in electrically noisy environments. Power consumption is optimized for extended flight times, with the nano receiver drawing minimal current while maintaining full 250Hz update rates, making it compatible with battery-powered RC platforms ranging from 1S micro drones to 6S racing quadcopters.

Key Specifications

Specification	Details
Product Type	2.4GHz ExpressLRS Radio Control Transmitter with Nano Receiver
Brand	Radiomaster
Origin	Original/Authentic
Warranty	7 days on manufacturing defects
Shipping	1-5 days from Bengaluru
Delivery	7-8 days across India
Support	24/7 via Email and WhatsApp
Frequency Band	2.4GHz ISM Band with FHSS Technology
Protocol	ExpressLRS (ELRS) Open Source
Update Rates	50Hz, 150Hz, 250Hz Selectable
Latency	7ms at 250Hz update rate
Maximum Range	40+ kilometers line-of-sight
Receiver Model	RP1 Nano Receiver
Receiver Size	16x16mm Ultra-Compact Form Factor
Receiver Weight	Less than 1 gram
Control Channels	16 Channels Full Range
Output Protocols	PWM, SBUS, DMA Compatible
Telemetry	RSSI, Battery Voltage, Signal Quality, LQ Percentage
Antenna Type	Integrated Omnidirectional Antenna
Power Supply Transmitter	USB-C Powered
Power Supply Receiver	2.5V to 5.5V Input Range
Failsafe	Programmable with Multiple Modes
Firmware	Open Source, Wireless Updatable

Key Features

• Ultra-Low Latency 7ms Response Time: Delivers sub-millisecond control lag at 250Hz refresh rate, essential for competitive FPV drone racing where split-second control inputs determine race outcomes and pilot safety margins
• Advanced FHSS Frequency Hopping: Automatically switches between 16 channels to avoid interference from WiFi networks, Bluetooth devices, and other 2.4GHz transmitters, ensuring reliable signal in crowded RF environments
• RP1 Nano Receiver Ultra-Compact Design: Measures just 16x16mm and weighs under 1 gram, enabling integration into micro FPV drones, racing quads, and weight-critical RC aircraft without compromising performance or flight characteristics
• Open-Source ExpressLRS Firmware: Access to community-driven development, wireless firmware updates, and customizable performance parameters allowing pilots to optimize settings for specific aircraft types and flying conditions
• Comprehensive Telemetry Feedback: Real-time RSSI, battery voltage monitoring, signal quality percentage, and link quality metrics displayed on compatible flight controllers and OSD systems for flight safety awareness
• 16-Channel Full Control Range: Supports complex aircraft configurations including quadcopters, fixed-wing aircraft, helicopters, and autonomous platforms with proportional control on all channels
• Multiple Output Protocols: Compatible with PWM, SBUS, and DMA output formats, ensuring seamless integration with virtually all modern flight controllers and RC receivers
• Extended Range Performance: Achieves 40+ kilometer reliable control range in line-of-sight conditions, supporting long-range FPV flights, aerial photography missions, and search-and-rescue drone operations

Applications and Use Cases

• FPV Drone Racing: Professional and amateur racing pilots use the Zorro ELRS for tournament-grade performance with ultra-low latency enabling precise gate navigation, rapid directional changes, and competitive edge in high-speed racing environments
• Long-Range FPV Flying: Aerial photographers and explorers leverage the 40+ kilometer range capability for extended FPV missions capturing remote landscapes, infrastructure inspection, and environmental monitoring without signal loss
• Micro FPV Drones: The RP1 nano receiver's 1-gram weight makes it ideal for sub-250g micro racing quads and tiny whoop drones where payload weight directly impacts flight performance and maneuverability
• Fixed-Wing RC Aircraft: RC airplane enthusiasts use the Zorro ELRS for reliable long-distance control of gliders, UAVs, and autonomous aerial vehicles requiring stable 16-channel control with extended battery life
• Autonomous Drone Operations: Commercial drone operators integrate the system into autonomous platforms for reliable telemetry feedback, failsafe programming, and manual override capability in GPS-denied environments
• RC Helicopter Control: Precision helicopter pilots depend on the low-latency 250Hz update rate for stable swashplate control, smooth hovering, and responsive acrobatic maneuvers in competitive flying
• Robotics and Autonomous Systems: Researchers and hobbyists use the transmitter for remote control of ground robots, underwater drones, and experimental autonomous platforms requiring reliable long-range RF control
• Backup Control Systems: Professional aerial cinematography teams use the Zorro ELRS as a redundant manual control system for DJI and other autonomous drones, providing emergency override capability

How to Use

To set up the Radiomaster Zorro ELRS system, first bind the RP1 nano receiver to the transmitter by powering the receiver while holding the bind button, then pressing the bind option on the transmitter's menu interface. Once binding is complete, connect the receiver to your flight controller using the appropriate output protocol (PWM for individual channels, SBUS for serial communication, or DMA for direct memory access depending on your flight controller's capabilities). Configure your transmitter's update rate based on your application: 250Hz for racing drones requiring maximum responsiveness, 150Hz for general FPV flying balancing latency and range, or 50Hz for long-range fixed-wing aircraft where extended range takes priority over update frequency. Verify telemetry reception by checking RSSI and link quality indicators on your OSD or flight controller to ensure adequate signal strength across your intended flying area.

For optimal performance, position the transmitter antenna perpendicular to the receiver antenna orientation to maximize signal strength and range. Update the transmitter and receiver firmware regularly using the ExpressLRS web-based configurator accessible through any modern web browser, which allows you to customize failsafe behavior, adjust output channel assignments, and enable advanced features like dynamic frequency switching. Test your control inputs thoroughly on the ground before flying, confirming that all 16 channels respond correctly and that failsafe modes activate properly when signal is lost. For competitive racing or critical applications, perform range checks at your flying location to verify adequate signal coverage and identify any RF dead zones caused by nearby structures or interference sources.

Frequently Asked Questions

What is the difference between 50Hz, 150Hz, and 250Hz update rates on the Zorro ELRS?

The update rate determines how frequently control commands are transmitted from the transmitter to the receiver. 250Hz provides the lowest latency (7ms) ideal for FPV racing where split-second control inputs are critical, 150Hz offers a balanced compromise between responsiveness and range for general FPV flying, and 50Hz maximizes range and reduces power consumption for long-distance fixed-wing applications. Higher update rates consume more power and reduce maximum range slightly, so choose based on your specific flying discipline and priority between responsiveness versus distance.

Is the RP1 receiver compatible with my flight controller?

The RP1 nano receiver supports PWM, SBUS, and DMA output protocols, making it compatible with virtually all modern flight controllers including Betaflight, iNav, ArduPilot, and commercial platforms. Check your flight controller's manual to determine which protocol it supports, then configure the receiver accordingly through the ExpressLRS configurator. PWM requires individual channel connections, SBUS uses a single serial line, and DMA provides the fastest communication for advanced flight controllers. If your flight controller doesn't support any of these protocols, you may need an adapter or alternative receiver model.

How do I update the firmware on my Zorro ELRS transmitter and RP1 receiver?

Both the transmitter and receiver support wireless firmware updates through the ExpressLRS web-based configurator. Connect your transmitter to a computer via USB-C cable, open the ExpressLRS configurator website, select your device, and follow the on-screen instructions to download and flash the latest firmware. For the receiver, connect it to a compatible flight controller and update through the same configurator interface. Always backup your current settings before updating

Buy Radiomaster Zorro ELRS Radio Transmitter with RP1 ExpressLRS 2.4ghz Nano Receiver Online in India

Purchase the Radiomaster Zorro ELRS Radio Transmitter with RP1 ExpressLRS 2.4ghz Nano Receiver online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat.

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